Single-cone spiral-spring bed or seat structure.



W.-O. LATHROP.

SINGLE CONE SPIRAL SPRlNG BED 0R SEAT STRUCTURE.

APPLICATION FILED ms. 21, 1913.

1 1 86,320 Patented June 6, 1916.

WILLARD o. LATHRQP, or CINCINNATI, 01110.

, SINGLE-CONE SPIRAL-SPRING BED R S EQAT STRUCTURE.

1 Specification of Letters Patent.

. v I Application filed February 21, 1913. Serial No. 749,842.

To all whom it may concern bent arched portion in one of the tie-Wires and a centrally-bent" depressed. portion in "Be it known that Ld/VILLARD O. LA'rHRor,v

a citizen of the United States OfAHIQIlCEL, and a'resident of Cincinnathinthecounty of Hamilton and State of Ohio,-have invented a certain new and useful Improve- Inent Single-Cone 'Spiral-Spring Bed or SeatStructures, ofwhieh the followingis a sp'ecificationt fl."

This lIlVGIltlO tie-wires, and its object is to provide a hookshape loop or bend in the, lowermost'volute or..,:coil-fextremity of aninverted-cone spi -the corners of cross tie-wire intersections,

the latter being; composed of a centrallythe other tie-wire, the said centrally-bent portions Crossing each other at that point in each andthe lower volute of the spring,

beginning with said hook-shape extremity,

being adapted to wind or pass under the said depressed portion of one tie-wire, thence over the said arched portion of the other tie-wire to one side of its central bend, thence again under the first-named tie'wire slightly beyond the depressed portion thereof and thence rising upward away 't'roni the body portion of the said second-named tie-wire and developing in diameter to form the inverted-cone spiralspring that the mattress of a bed or of the upholstered portion of a seat. rests upon. The peculiar manner of interlocking the lower hook-extremity of the inverted-cone spiral-spring with the intersecting arched and depressed portions of the cross tie-wires forms the essential feature of the invention herein and is at once'an extremely simple, firm and durable device, easily made and kept in repair, as well as replaced when desired.

In the accompanying sheet of drawings,

Figure 1 is a fragmentary plan view show- .-ing one corner of a spring-structl u'e that brings clearly to view the attaching and supporting essential elements of my invention herein, the spring being shown broken off not far from its lower attaching-eral; Fig. 2, a fragnientary elevation showing a part of the inverted-cone spiral-spring. one of relateslto' spring-bedstructures in which] an inverted-cone ,spiralspring is-supported; and fastened at its lowernarrowest extremity uponintersecting the cross tie'wires, the borderv or binding wire and a cross-section of the other crosst1e-w1re together with the lower hook end or extremity of the spring, showing the interlocking feature, and taken on the dotted- Patented June 6,1916.

line a, a, of Fig. 1; Fig. 3, a transverse section taken at right-angles. to that seen in This view is added more. in the nature of making clear the pecuharcla'ss of spring to WhlCh my invention is especially applicable.

1 indicates the border or binding wire of the lower or supporting portion of the spring-structure, 2 being eachone of the usual parallel cross tie-wires extending in one direction from their hook-ends 3 along the border-wire 1, and 4 being each one of the usual parallel tie-wires that cross the tie-wires 2 at suitable intervalsapart and are hooked to said border-wire at 5.

The border-wire 1 is a heavy one, as customary, and the cross tie-wires 2 and 4 are lighter ones, both of the same gage.

At crossings or intersections of the tiewires '2 and 4, each tie-wire 2 is depressed or bent downward at (3 and each tie-wire 4 is arched or bent upward as shown at 7, the arch taking a definite central bend to provide a definite seat for the central por-.

tion of the depressed bend 6 in the tie-wire 2, as best-seen in Fig. 3. The said definite central bend in the arch 7 prevents any lateral shifting of the tie-wires at the crossin s or intersections and forms a secure interloc The depressed portion 6 and the arch portion 7 have straight sloping side-members whereby suitable corners or angles are provided that assure ample seating capacity for the lower attaching-end of the spring that is in approximately axial-alinement with the I volutes of the sprin angularly sloped or depressed extremity 12 snugly seats or rests in a corner formed by said cross tie-wires 2 and 4 and with itsend in abutting-engagement with the depressed portion 6 of the tie-wire 2, as best seen in ig. 3, and'dotted in Fig. 2, and thence the narrow white 11 passes over and in contact with the tie-wire 4: so as to seat at the beginascend or rise in its con'volutions toward the broad upper end 9 thereof.

It is obvious that the contact of the angularly sloped ordep'ressed end 'or extremity Hand of the succeeding parts of the'lower Volute of the spring wire in connection with the arched portion 7 and the depressed por tion 6 of the. intersection of cross tie-wires v 2 and4 Wlll make a firm and substantial interlock that will not become loose or de cached in'use. Th1s fastening can be readily effected and'the spring can be readily removed. when desired by simply disengaging theangularly sloped or depressed end or extremity l'lfrom its resting'corner.

broadest portion thereby disposed v Wardly and having at its lower end a U- I prefer to make the wire spring of the sameage'asthat of'the cross-ties 2 and 4, where y the best form of interlock results, although the spring itself might be of heavier wire to suit the greater weights that may be imposed upon it in use.

A single-cone, spiral-spring bed or seat structure comprising a Vertical, conical spiral-spring that tapers upwardly and with its shape or hook formation whose straight extremity slopes downwardly, a'transverse horizontal tie-wire having an inverted-V: shape or angularly-arched' portion provided therein and adapted to engagethe said lower, straight slop'inge' remity of the spring, and another tie-wine lying atrightangles to the first-named. tie-wire ii-11d having. a 'V shape portion therein that is in crossing-contact with the said inverted-V- shape singularly-arched portion of said first named tie-wire andis thereby adapted to interlock with and securely stop the lower :hoolcshape extremity of the spring at-the crossing-point of the said tie-wires that aXially-ahnes the spring and with the said straight slopingend of said U-shape extremity abutting the said V-shape portion of the second-named tie-wire. i

I WILLARD O. LATHROP, Witnesse-u v I Jenn ELIAS J ones, LORETTA LUCK. 

